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32 software engineering intern jobs at 28 companies in Simi Valley, CA

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Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
Help us #BeatIndeed & #BeatLinkedIn
2mo
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Software Engineering Intern
El Segundo, California, United States
$4k-$6k/mo OnsiteAll Commitments Available
Rainmaker
Rainmaker: Provides cloud seeding services using drones and radar.
Internship requiring strong Python fundamentals, data handling, APIs, and SQL with interest in geospatial or sensor data.
Python, APIs, SQL
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2mo
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Software Engineering Intern, Backend & API
Glendale, California, United States
$25-$35/hr HybridInternship
Moon
Moon: Building an AI-powered SaaS platform for business operations.
C# coursework or project experience; REST API design; SQL and data skills; willingness to learn .NET specifics.
.NET, React, Capacitor, Python, Cursor, Copilot, Claude
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3mo
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Modeling & Simulation Software Engineering Intern - Fall 2026
Los Angeles, California, United States
$25-$33/hr OnsiteInternship
Hermeus
Hermeus: Develops high-speed and hypersonic aircraft for defense and transportation.
0+ YOEPursuing a degree in Computer Science, Aerospace Engineering, Electrical Engineering, Applied Mathematics, or related field; proficient in Julia or Python/MATLAB/C++; knowledge of 6DOF dynamics; experience with data validation and modeling; GPA 3.0+; strong communication and teamwork.
Julia, Python, MATLAB, C++
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1w
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AI-First Engineering Intern
Los Angeles, California, United States
$20-$25/hr OnsiteInternship
Xsolla
Xsolla: Provides payment and monetization tools for game developers.
Experience using agentic AI coding tools, full-stack development comfort, proof-of-work portfolio (GitHub or deployed projects), currently a CS/software student or recent graduate, strong initiative and communication.
Claude Code, Cursor, Copilot, GitHub, APIs, SDKs, Loom
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1w
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Software Engineering Internship - Fall 2026
Torrance, California, United States
OnsiteFull Time
Vital Lyfe
Vital Lyfe: Develops portable devices that produce clean drinking water anywhere.
Strong programming fundamentals; experience with Python or TypeScript; familiarity with APIs, web applications, cloud systems; practical problem-solving and ownership mindset.
Python, TypeScript, React, SQL, AWS
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2mo
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Manager, Software Engineering (Tools & Frameworks) - Developer Connections
Los Angeles or Mercer Island or Redwood City or San Francisco
$207k-$290k/yr HybridFull Time
Riot Games
Riot Games: Developing and publishing competitive multiplayer video games.
7+ YOE1+ Mgmt7+ years software engineering, 1+ year people management, proficient in Go or Java, experience building shared libraries/platforms, product mindset for internal tools, familiarity with AI/LLM integrations and containerization.
Go, Java, Kubernetes, CI/CD, AI/LLM integrations, Containerization, Slack/Discord platforms
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1w
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Ground Software Engineering Manager -Millennium Space Systems
El Segundo, California, United States
$170k-$253k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
4+ YOE1+ MgmtExperience leading engineering teams, 4+ years aerospace experience, 1+ year leadership experience or internal leadership course, U.S. person eligible for Top Secret clearance required.
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1mo
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Software Engineer Intern
Los Angeles, California, United States
$30/hr HybridInternship
Centerfield
Centerfield: Drives customer acquisition through performance marketing and digital brands.
Required experience with C#/.NET, SQL, HTML/CSS/JavaScript, source control and OOP; pursuing a Computer Science degree; local to Playa Vista and available to work in-office three days/week.
C#, .NET, SQL, HTML, CSS, JavaScript, React, Node.js, Python, Java, AWS, Google Cloud Platform (GCP), Kafka, Amazon SQS, RabbitMQ, Docker, REST APIs
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2mo
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Intern – Web Interface Software Engineer (2026)
Los Angeles, California, United States
$29-$34/hr OnsiteInternship
Motorola Solutions
Motorola SolutionsNYSE: MSI: Provides mission-critical communications and public safety technology.
In-progress Bachelor’s or Master’s in CS/CE/EE; JavaScript, Python, C/C++; web debugging; Linux; basic networking; U.S. citizen; background check and drug test.
JavaScript, Python, C++, C, jQuery, ReactJS, Linux, JSON, APIs
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1mo
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Utility Intern
Long Beach, California, United States
$22-$26/hr OnsiteMultiple Commitments Available
HDR
HDR: Global firm providing architecture, engineering, and environmental services.
Currently enrolled in an undergraduate or graduate engineering program; basic Microsoft Office skills; attention to detail, problem-solving and communication skills; able to work ~20 hours/week on-site; GPA and software familiarity preferred.
Microsoft Office
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2mo
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Senior Software Development Engineer, Developer Tools
Belgrade or The Hague or Taipei or Burbank or Walnut Creek
$132k-$194k/yr HybridFull Time, Contract
Network Optix
Network Optix: Software platform for building and managing intelligent video solutions.
Senior-level software engineer focused on CI/CD automation, building internal tools and improving build pipelines.
Python, Git, Bash, PowerShell, GitLab, Jira, Artifactory, CMake, Ninja, Conan, Jenkins
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1mo
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Mission Operation Intern Fall 2026
Littleton or Long Beach
$25/hr OnsiteInternship
Rocket Lab
Rocket LabNasdaq: RKLB: Operates launch vehicles and manufactures satellites for space missions.
0.25+ YOEEnrolled in bachelor’s, master’s, or doctoral program in aerospace/aeronautical/mechanical/software engineering; 3+ months engineering experience; GPA 3.0+; proficient in Python, Linux, Git.
Python, Linux, Git
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5d
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Embedded Software Engineer (Entry-Junior)
Los Angeles, California, United States
$90k-$161k/yr OnsiteFull Time
Revel
Revel: Modern software platform for controlling complex hardware systems.
0+ YOEBachelor's degree (or equivalent),0–2 years experience in systems/embedded software,foundational C/C++/Rust knowledge,Linux internals familiarity,and interest in hardware-software integration.
Rust, C, C++, Linux, SPI, I2C, UART, CAN, logic analyzers, oscilloscopes
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2w
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Software Engineer, iOS, Level 5
Santa Monica or Los Angeles
$209k-$313k/yr OnsiteFull Time
Snap
SnapNYSE: SNAP: Provides visual messaging software and augmented reality wearable devices.
6+ YOE6+ years software development experience, iOS application development, strong CS fundamentals, Objective-C/iOS internals, multithreading and performance optimization, Bachelor’s in CS or equivalent experience.
Objective-C, Objective-C Runtime, Swift, C, C++, OpenGL, Metal
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3w
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Director of Engineering, Internal Platforms & Developer Experience
United States or Los Angeles or Long Beach or Anaheim or Santa Ana or New Jersey or Texas or Florida or Shanghai or Japan or Hong Kong or Canada or Mexico or Germany or France
$212k-$300k/yr HybridFull Time
Collectors
Collectors: Providing authentication and grading services for high-value collectibles.
10+ YOE5+ Mgmt10+ years in software or infrastructure engineering, 5+ years managing engineering teams, experience with cloud platforms, container orchestration, CI/CD, infrastructure-as-code, observability, and developer experience; strong cross-functional and communication skills.
AWS, Microsoft Azure, GCP, k8s, GitHub Actions, ArgoCD, Terrafor, Crossplane, e-Verify
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1mo
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Staff Software Engineer, Internal Tools
New York City or San Francisco or Los Angeles
$227k-$325k/yr HybridFull Time
Tubi
TubiNASDAQ: FOXA: Free ad-supported streaming service for movies and television.
8+ YOE8+ years software engineering experience; deep distributed systems expertise; strong full‑stack skills with Node.js/TypeScript, React/TypeScript, PostgreSQL/Drizzle ORM, and Python; experience integrating LLMs/AI into production systems.
Node.js, TypeScript, Express, React, PostgreSQL, Drizzle ORM, Python, OpenAI, Google Gemini, Claude Code, Codex, Cursor, MCP, LLM
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3w
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Software Engineer, Staff
New York City or San Francisco or Seattle or Los Angeles or United States
$214k-$248k/yr RemoteFull Time
Check
Check: Provides embedded payroll infrastructure for software platforms.
Staff-level ownership of production systems, experience building internal tools or platforms, strong debugging and design skills, ability to collaborate cross-functionally, and willingness to work with Python/Django, React, TypeScript, AWS, Terraform, Postgres, Temporal, and GitHub.
Python, Django, React, TypeScript, AWS, Terraform, Postgres, Temporal, GitHub
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2mo
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Senior Software Engineer, Frontend
Los Angeles or Remote
$145k-$195k/yr HybridFull Time
Zoo
Zoo: Develops infrastructure and AI-powered tools for hardware design.
5+ YOESenior frontend software engineer with strong TS/React, performance optimization, Wasm, and browser internals knowledge.
TypeScript, React, XState, WebAssembly, CodeMirror, Rust, WebGL
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1mo
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Staff Software Engineer, Storage Platform
Long Beach, California, United States
$181k-$249k/yr OnsiteFull Time
Relativity Space
Relativity Space: Designing and manufacturing 3D-printed rockets and launch vehicles.
5+ YOE5+ years kernel/driver development experience (PCI/PCIe, block storage), strong Linux internals and storage systems (ZFS/OpenZFS, NVMe, NFS), experience with fault injection and reliability modeling, hardware lab prototyping.
Linux, OpenZFS, ZFS, NFS, NVMe, PCI, PCIe, Yocto, Buildroot, ftrace, perf, bpftrace, kdump, vmcore, serial console, logic analyzer
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3w
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Software Engineer II – Test/Internal Tooling
Los Angeles, California, United States
$140k-$164k/yr OnsiteFull Time
Parallel Systems
Parallel Systems: Building autonomous battery-electric rail vehicles for freight transportation.
3+ YOE3+ years software development experience with scripting (Python, JS) and systems (C++, Rust); experience building test infrastructure (HITL/SITL), Linux, CI, test frameworks, mentoring, and cross-functional collaboration.
Python, JS, C++, Rust, Linux, CI
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